Two bivalve species, hitherto unrecorded, from the Upper Jurassic of the Transdanubian Range (Hungary)

Abstract

Upper Jurassic bivalves yielded by the Transdanubian Range until the early 2010s were documented in two papers published in the last decade. Following the publication of them, two specimens representing species previously unknown from the area have been found. The Kimmeridgian limestone of Kálvária Hill, located in the town of Tata has yielded the lophate oyster Actinostreon aff. gregareum (J. SOWERBY, 1815), while a specimen of the pholadomyoidean Procardia aff. acuminata (HARTMANN, 1830) was collected from the Tithonian limestone exposed in the Közöskút Ravine, located near the village of Hárskút (Bakony Mts). The new finds represent the first known occurrence of the genera Actinostreon and Procardia in the Jurassic of the Transdanubian Range. Both genera are particularly uncommon in the deeper water pelag -ic Upper Jurassic of the peri-Mediterranean region.